[AlaAlba]

Don't you think this line is very very suspicious?

Spoiler for 1:

in the novel she saids that her feelings towards her brother is:

Volume 1, p.222-223
"...not that of romance, and it couldn't possibly be that of love.
That person is my true brother.
I have been telling myself this ever since that time, three years ago."

She wants to be a support to her brother. As he in the past rescued her, this time she wants to help him, and someday stand besides him as an equal.